A docker image containing:
The official ghost docker image use Debian Linux as base image and has a size of ~215 MB.
This image instead use Alpine Linux as base image which results in a total size of only ~88-96 MB and also runs ghost on iojs v1.6.4.
docker pull fractalf/ghost
docker run -d -p 80:2368 fractalf/ghost
docker run -d -p 80:2368 -v /path/to/ghost/files:/ghost-override fractalf/ghost
which will create av volume outside the container where you can keep your ghost data files etc..